.ThreeDView .viewCube .cubeFace {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-family: sans-serif;
    width: 100px;
    height: 100px;
    background: lightgray;
    font-size: 25px;
    text-align: center;
    border: darkgray 10px solid;
    color: black;
}

.ThreeDView .viewCube .cubeFace:hover {
    background: white;
}

.ThreeDView canvas {
    display: block;
}